Smiley’s people by Le Carr?, John

The murdered man had been an agent – once, long ago. But George Smiley’s superiors at the Secret Service want to see the crime buried, not solved. Smiley will not leave it at that, not when it might lead him all the way to Karla, the elusive Soviet spymaster – ‘Smiley’s People’ is a thrilling confrontation between one of the most famous spies in all fiction and his Cold War rival, Karla.